Improvement in treating solid and liquid hydrocarbons



UNITED STATES FFICE EEEnEEIoK LAMBE, or LONDON, ENGLAND.

Specification forming part of Letters Patent No. 115,871, dated June 13,1871.

To allwhom it may concern:

Be it known that I, FREDERIQK LAMBE, of London, England, have invented anew and useful Improved Method of Treating Paraffine and Fatty Oils; andI do hereby delare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand use the same.

My invention relates to a new and improved process of treating parafiineand fatty oils in order to remove the coloring matter and otherimpurities therefrom.

I first melt the fatty oil or crude paraffine, and, having allowed themechanical impurities which it contains to subside, I run the liquidclarified oil or paraffine into another vessel, where I again heat it toabout 250 Fah-v renheit, and then add to it about ten per cent. byweight of sulphuric acid of the strength of oil of vitriol of commerce,with which I agitate it, so as to form a complete mixture beparafiinemay be drawn 0ft and mixed with spirit or coal naphtha, and then pressedand filtered through animal charcoal in the ordinary manner.

The treatment with fullers-earth may be repeated one or more times, ifthought necessary, so as to effect the more complete purification of theoil or parafline.

The fullers-earth might be used for finishing the bleaching of parafiinein lieu of animal charcoal, whatever the previous process ofpuritication may have been. In that case about twelve per cent. ofpowdered fullers earth is added to the melted paraffine, which ismaintained at a temperature of about 230 Fahrenheit, and well agitated,and after subsidence the clear paraffine is run oii'.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The herein-described process of treating paraihne and fatty oil,consisting, essentially, in reheating the clarified portion of the same,agitating it mixed with sulphuric acid for removing the colored matter,adding fullersearth, and mixing it with naphtha, as shown and described.

The above specification of my invention signed by me this 8th day ofAugust, 1870.

FREDERICK LAMBE.

Witnesses STEPHEN BLACKBURN, HENRY IVIATHEWSON.

